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5. Yu. M. Zabolotnov and V. V. Lyubimov, “Application of the Method of Integral Manifolds for Construction of Resonant Curves for the Problem of Spacecraft Entry into the Atmosphere,” Kosmich. Issled. 41 (5), 481–487 (2003) [Cosmic Res. (Engl. Transl.) 41 (5), 453–459 (2003)].